Correct Answer:- Option-B
Question29:-least count of a micrometer is
A:-0.01 mm
:-0.001 mm
C:-0.02 mm
D:-0.002 mm
Correct Answer:- Option-A

Question30:- is a precision instrument meant for measuring angle precisely to an accuracy of 5 minutes.

A:-vernier bevel protractor
B:-micrometer
C:-vernier caliper
D:-bevel protractor
Correct Answer:- Option-A
Question31:-_____ is an operation of beveling the end of the drilled hole.
A:-countersinking
B:-counterboring
C:-spot facing
D:-reaming
Correct Answer:- Option-A
Question32:-ISO metric thread is designated as M12 x 1.25. What is 1.25 ?
A:-diameter of the thread
B:-length of the thread
C:-pitch of the thread
D:-thickness of the bolt head
Correct Answer:- Option-C

Question33:-When two machined components are assembled a small gap is needed between two parts is called

A:-clearance hole

B:-one part is defective

C:-hole is not standard

D:-all of the above

Correct Answer:-Question Cancelled
Question34:- is the difference between the maximum limit of size and minimum limit of height.

A:-deviation
B:-upper deviation
:-lower deviation

D:-tolerance

Correct Answer:- Option-D
Question35:-Least count of a vernier micrometer is

A:-5 minutes

B:-0.02 mm
:-0.001 mm

D:-0.01 mm

Correct Answer:- Option-C
Question36:-Cast iron is manufactured from

A--blast furnace

B:-cupola furnace

C:-puddling furnace

D:-electric process

Correct Answer:- Option-B
Question37:-The purpose of annealing are
A:-to obtain softness
-to relieve internal process

C:-both A and B

D:-none of the above

Correct Answer:-Question Cancelled
Question38:-Zinc coated iron is called

نانم

B:-brass

C:-bronze